- The head of toothbrush should be obtuse type. Don’t buy those toothbrush with square or triangle head. The recommended toothbrush head have length of 2.5-3.2cm, width of 0.8-1cm, toothbrush head with 2-4 lines of bristles, each line 5-12 bunches of toothbrush bristle.
- The bristle should have same height. Many popular toothbrush have curved bristle like middle short. But sometimes, this kind of toothbrush bristle can’t remove dental plaque completely.
- The more bunches of bristle of the toothbrush have, the better the toothbrush is. More bunches of toothbrush bristle improve the clean effective.
- Toothbrush bristle can’t be too hard or too soft. Press on the toothbrush bristle, if it’s thorn, don’t use it, if it’s too soft, don’t use it either.
- Have angle between handle and bristle. Toothbrush handle should match your hand shape, then the strength will be well controlling. The angle will be good at 17o-20o.
